As far as I know the ABS and airbags require absolutely no maintenance. I saw a deployed airbag in a car recently, Volvo revised their 10 year replacement interval, and my ABS system works great. Never have I done anything than a solitary fluid flush when I replaced my front brake lines.

Get one with ABS and airbags. A car without an airbag will Never deploy an airbag. One with an airbag likely will, and if not, it will not fare any worse than one designed without airbags.

My ABS has saved my butt several times. Hit the sensors with some brake cleaner when you change your pads. I think(?) that the car will trip the ABS light if it detects no input from the wheel sensors for an extended amount of time.
Two times the ABS saved my car were when a semi ran a red light (barstard was on a cell phone!) in the rain, and another time was when someone made a left turn across 3 lanes from the right-turn only lane.
If I had had ABS in the camry I was driving, I would have avoided hitting a horse two years ago.
ABS should be required by law on all new cars.

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1990 740 Turbo, on its way to stock specs, maybe beyond